#busy_indicator {
    display: none;
    position: fixed;

    bottom: 0;
    left: 0;
    width: 100%;

    overflow: hidden; /*Disable scroll-bars. Set to "scroll" to enable*/

    background: black;
    color: white;
    
    z-index: 1000;
    font-weight: bold;
    text-align: center;
    font-size: 1em;
    
    background-image: url(busy-bar.gif);
    background-position:center;
    background-repeat:no-repeat;
}